Product

Eccentric Half Ball Valve

High-performance rotary valve designed for reliable sealing in harsh operating environments. Unlike traditional ball valves, it features an eccentrically mounted half-ball that swings away from the seat during opening and presses tightly against it when closed. This eccentric motion reduces friction, prevents seat wear, and provides a long-lasting metal-to-metal or soft sealing structure. It is especially suitable for slurry, sewage, and media containing solid particles.

Benefits

Low friction, wear-resistant: Eccentric movement minimizes seat and ball contact during opening
Tight shutoff: Ensures zero leakage in both soft and metal seat configurations
Anti-clogging design: Excellent for viscous, abrasive, or particulate-laden media
Long service life: Reduced wear increases reliability in demanding conditions
Bidirectional sealing: Effective sealing from both upstream and downstream directions
Easy maintenance: Compact structure allows easier disassembly and seat replacement

Technical Data

Parameter	Details
Function	On/Off (quarter-turn eccentric rotary operation)
Connection Type	Flanged, Wafer, Butt Weld, Socket Weld
Material	Body: WCB, CF8, CF8M, Duplex SteelBall: 304/316 Stainless Steel, Alloy SteelSeat: PTFE, RPTFE, Metal Seat (Hard Alloy/Stellite)
Max. Nominal Pressure	PN10 ~ PN64 / Class 150 ~ Class 600
Max. Nominal Size	DN50 ~ DN1000 (2” ~ 40”)
Allowable Fluid Temperature	-29°C to +425°C (depending on material and sealing type)

Sectional Drawings

Applications

Wastewater and sewage treatment
Slurry transport in mining and metallurgy
Petrochemical and oil refining systems
Paper and pulp processing
Food and beverage production with solid content
Chemical plants handling corrosive or dirty fluids